136680705870654 has 64 divisors (see below), whose sum is σ = 302941380994560. Its totient is φ = 40766632560000.

The previous prime is 136680705870649. The next prime is 136680705870689. The reversal of 136680705870654 is 456078507086631.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61825177 + ... + 63997764.

It is an arithmetic number, because the mean of its divisors is an integer number (4733459078040).

Almost surely, 2^{136680705870654} is an apocalyptic number.

136680705870654 is an abundant number, since it is smaller than the sum of its proper divisors (166260675123906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136680705870654 is a wasteful number, since it uses less digits than its factorization.

136680705870654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125823217.

The product of its (nonzero) digits is 203212800, while the sum is 66.

The spelling of 136680705870654 in words is "one hundred thirty-six trillion, six hundred eighty billion, seven hundred five million, eight hundred seventy thousand, six hundred fifty-four".